《struts2权威指南》学习笔记之struts2+jsf+spring+sitemesh集成开发

来源：互联网发布：布尔战争知乎编辑：程序博客网时间：2024/05/01 22:12

1.安装sitemesh插件

    与整合其他框架类似，struts2与sitemesh框架的整合也使用了插件方式进行管理。将struts2-sitemesh-plugin-2.0.6.jar文件复制到WEB-INF/lib下，为了整合sitemesh框架，必须在web.xml中配置sitemesh过滤器，让该核心过滤器来过滤所有的用户请求。但我们知道，struts2的所有值一旦访问该stack context或ValueStack后，里面对应的数值将会被清除掉，如果先使用了struts2的FilterDispather来过滤用户请求，则sitemesh的过滤器将无法取得Stack context或者ValueStack中的数据
   为了解决这个问题，struts2提供了ActionContextCleanUp类，在struts2的架构中，标准的过滤器一般以ActionContextCleanUp开始，后面跟着其他需要的过滤器，最后，由FilterDispatcher来处理请求，FilterDispatcher通常是将请求传递给ActionMapper
   ActionContextCleanUp的一个重要作用是整合sitemesh页面装饰器，它通知FilterDispatcher在正确的时间清除ActionContext中的请求数据，所以正确的排序如下：
    （1）ActionContextCleanUp过滤器
    （2）SiteMesh核心过滤器
    （3）FilterDispatcher过滤器

web.xml

<?xml version="1.0" encoding="GBK"?>

<web-app id="jsf" version="2.4"

xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter-name>sitemesh</filter-name>

<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>

</filter>

<filter-name>struts</filter-name>

<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>sitemesh</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>struts</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>

</listener>

<servlet-name>faces</servlet-name>

<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>faces</servlet-name>

<url-pattern>*.action</url-pattern>

</servlet-mapping>

</web-app>

spring配置文件

<?xml version="1.0" encoding="GBK"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

</beans>

sitemesh装饰配置文件

<?xml version="1.0" encoding="GBK"?>

<pattern>/exclude.jsp</pattern>

<pattern>/exclude/*</pattern>

</excludes>

<!-- 创建一个名为main的装饰器，该装饰器页面为main.jsp,

用于装饰pattern指定的URL的所有页面-->

</decorator>

</decorators>

装饰器decorators/main.jsp

<%@ page contentType="text/html; charset=GBK"%>

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator"%>

<%@ taglib uri="http://www.opensymphony.com/sitemesh/page" prefix="page"%>

<html>

<head>

<decorator:head/>

</head>

<body>

<tr>

<page:applyDecorator page="/book.html" name="panel" />

<page:applyDecorator page="/link.html" name="panel" />

</td>

<tr>

<decorator:title/>

</td>

</tr>

<tr>

<decorator:body />

</td>

</tr>

<tr>

<b>被包含的内容</b><br>

SithMesh提供页面装饰支持

</td>

</tr>

</table>

</td>

</tr>

</table>

</body>

</html>

装饰器decorators/panel.jsp

<%@ page contentType="text/html; charset=GBK"%>

<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>

<p>

<tr>

<decorator:title default="小面板页面" />

</th>

</tr>

<tr>

<decorator:body />

</td>

</tr>

</table>

</p>

装饰器样式decorators/main.css

body, td, p {

font: normal x-small verdana, arial, helvetica, sans-serif;

}

.panelTitle {

background-color: #003399;

color:#eeeeee;

font-weight: bold;

border-color: #3366ff #000033 #000033 #3366ff;

border-width: 1;

border-style: solid;

padding: 1;

}

.panelBody {

background-color: #eeeeee;

border-color: black;

border-width: 0 1 1 1;

border-style: solid;

padding: 2;

}

#pageTitle {

background-color: #003399;

color:#eeeeee;

font-weight: bold;

font-size: large;

border-color: #3366ff #000033 #000033 #3366ff;

border-width: 1;

border-style: solid;

padding: 1;

text-align: center;

}

#footer {

background-color:#eeeeee;

font-size: 9pt;

text-align: center;

color: black;

border-color: #666666 #cccccc #cccccc #666666;

border-width: 1;

border-style: solid;

padding: 1;

}

被装饰页面book.html

<html>

<head>

</head>

<body>

Spring2.0宝典<br>

轻量级J2EE企业应用实战<br>

基于J2EE的Ajax宝典

</center>

</body>

</html>

被装饰页面link.html

<html>

<head>

</head>

<body>

<a href="http://www.nit-pro.org">NIT-PRO考试中心</a><br>

<a href="http://www.oneedu.cn">新东方IT培训中心</a><br>

<a href="http://www.oneedu.cn">东方标准人才服务公司</a><br>

</center>

</body>

</html>

JSF功能页面list.jsp

<%@ page language="java" contentType="text/html; charset=GBK"%>

<%@ taglib prefix="f" uri="http://java.sun.com/jsf/core" %>

<%@ taglib prefix="h" uri="http://java.sun.com/jsf/html" %>

<html>

<head>

<title>Struts2+MyFaces+Spring整合</title>

</head>

<body>

<f:view>

<h3>Struts2+MyFaces+Spring整合</h3>

<h3>列出所有图书</h3>

<h:dataTable value="#{action.allBook}" var="b" style="text-align:center;width:500px" border="1">

<h:column>

<f:facet name="header">

<h:outputText value="图书ID" />

</f:facet>

<h:outputLink value="edit.action">

<f:param name="editId" value="#{b.id}" />

<h:outputText value="#{b.id}" />

</h:outputLink>

</h:column>

<h:column>

<f:facet name="header">

<h:outputText value="图书名" />

</f:facet>

<h:outputText value="#{b.name}" />

</h:column>

<h:column>

<f:facet name="header">

<h:outputText value="图书简介" />

</f:facet>

<h:outputText value="#{b.desc}" />

</h:column>

</h:dataTable>

<p>

<h:outputLink value="edit.action">

<h:outputText value="新增图书"/>

</h:outputLink>

</p>

</f:view>

</body>

</html>

JSF功能页面edit.jsp

<%@ page language="java" contentType="text/html; charset=GBK"%>

<%@ taglib prefix="f" uri="http://java.sun.com/jsf/core" %>

<%@ taglib prefix="h" uri="http://java.sun.com/jsf/html" %>

<html>

<head>

<title>Struts2+MyFaces+Spring整合</title>

</head>

<body>

<f:view>

<h3>Struts2+MyFaces+Spring整合</h3>

<h:form>

<h:inputHidden value="#{action.editId}"/>

<h:panelGrid columns="3">

<h:outputText value="图书ID"/>

<h:inputText id="id" size="5" value="#{action.currentBook.id}" required="true" />

<h:message for="id" />

<h:outputText value="图书名:"/>

<h:inputText id="name" size="30" value="#{action.currentBook.name}" required="true">

<f:validateLength minimum="2" maximum="100" />

</h:inputText>

<h:message for="name" />

<h:outputText value="图书描述：" />

<h:inputText id="desc" size="30" value="#{action.currentBook.desc}" required="true">

<f:validateLength minimum="2" maximum="100" />

</h:inputText>

<h:message for="desc" />

</h:panelGrid>

<h:commandButton value="保存" action="#{action.save}" />

<br/>

</h:form>

</f:view>

</body>

</html>

struts.xml

<?xml version="1.0" encoding="GBK"?>

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<interceptor-stack name="jsfFullStack">

<interceptor-ref name="params" />

<interceptor-ref name="basicStack"/>

<interceptor-ref name="jsfStack"/>

</interceptor-stack>

</interceptors>

<default-interceptor-ref name="jsfFullStack"/>

</package>

</action>

<result name="list" type="redirect">list.action</result>

</action>

</package>

</struts>

BookService

package lee.service;

import java.util.*;

import lee.model.Book;

public class BookService

{

private Set<Book> bookDb;

public BookService()

{

bookDb = new HashSet<Book>();

bookDb.add(new Book(1 , "Spring2.0宝典" , "全面介绍了Spring各个知识点"));

bookDb.add(new Book(2 , "轻量级J2EE企业应用实战" , "介绍实际企业的J2EE开发过程"));

}

public Set<Book> getAllBook()

{

return bookDb;

}

public Book getBookById(int id)

{

for (Book b : bookDb)

{

if (b.getId() == id)

{

return b;

}

return null;

}

public void addBook(Book b)

{

bookDb.add(b);

}

Book

package lee.model;

public class Book

{

private int id;

private String name;

private String desc;

public Book()

{

}

public Book(int id , String name ,String desc)

{

this.id = id;

this.name = name;

this.desc = desc;

}

public void setId(int id)

{

this.id = id;

}

public int getId()

{

return this.id;

}

public void setName(String name)

{

this.name = name;

}

public String getName()

{

return this.name;

}

public void setDesc(String desc)

{

this.desc = desc;

}

public String getDesc()

{

return this.desc;

}

public int hashCode()

{

return id;

}

public boolean equals(Object target)

{

if (target instanceof Book)

{

Book b = (Book)target;

if (b.getId() == this.id)

{

return true;

}

return false;

}

BookAction

package lee.action;

import com.opensymphony.xwork2.ActionSupport;

import java.util.*;

import lee.model.Book;

import lee.service.BookService;

public class BookAction extends ActionSupport

{

private Book currentBook;

private int editId;

private BookService bs;

public void setBs(BookService bs)

{

this.bs = bs;

}

public void setCurrentBook(Book currentBook)

{

this.currentBook = currentBook;

}

public Book getCurrentBook()

{

//如果editId请求参数不为空，则currentBook也不为空

if (editId != 0)

{

this.currentBook = bs.getBookById(editId);

}

else if (currentBook == null)

{

currentBook = new Book();

}

return this.currentBook;

}

public void setEditId(int editId)

{

this.editId = editId;

}

public int getEditId()

{

return this.editId;

}

public List<Book> getAllBook()

{

List<Book> result = new ArrayList<Book>();

for (Book b : bs.getAllBook())

{

result.add(b);

}

return result;

}

public String save()

{

bs.addBook(currentBook);

return "list";

}

struts.properties

struts.i18n.encoding=gb2312
struts.objectFactory.spring.autoWire=type

如果web应用是test.,则运行

http://localhost:8080/test/list.action 则会出现如下被装饰过的页面